projects / apple / xnu.git / blame
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|---|---|---|
| 6d2010ae A |
1 | .\" Copyright (c) 1983, 1991, 1993 |
| 2 | .\" The Regents of the University of California. All rights reserved. | |
| 3 | .\" | |
| 4 | .\" Redistribution and use in source and binary forms, with or without | |
| 5 | .\" modification, are permitted provided that the following conditions | |
| 6 | .\" are met: | |
| 7 | .\" 1. Redistributions of source code must retain the above copyright | |
| 8 | .\" notice, this list of conditions and the following disclaimer. | |
| 9 | .\" 2. Redistributions in binary form must reproduce the above copyright | |
| 10 | .\" notice, this list of conditions and the following disclaimer in the | |
| 11 | .\" documentation and/or other materials provided with the distribution. | |
| 12 | .\" 3. All advertising materials mentioning features or use of this software | |
| 13 | .\" must display the following acknowledgement: | |
| 14 | .\" This product includes software developed by the University of | |
| 15 | .\" California, Berkeley and its contributors. | |
| 16 | .\" 4. Neither the name of the University nor the names of its contributors | |
| 17 | .\" may be used to endorse or promote products derived from this software | |
| 18 | .\" without specific prior written permission. | |
| 19 | .\" | |
| 20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 21 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 22 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 23 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 24 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 25 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 26 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 27 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 28 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 29 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 30 | .\" SUCH DAMAGE. | |
| 31 | .\" | |
| 32 | .\" @(#)getdtablesize.2 8.1 (Berkeley) 6/4/93 | |
| 33 | .\" $FreeBSD: src/lib/libc/sys/getdtablesize.2,v 1.4.2.3 2001/12/14 18:34:00 ru Exp $ | |
| 34 | .\" | |
| 35 | .Dd June 4, 1993 | |
| 36 | .Dt GETDTABLESIZE 2 | |
| 37 | .Os | |
| 38 | .Sh NAME | |
| 39 | .Nm getdtablesize | |
| 40 | .Nd get descriptor table size | |
| 41 | .Sh LIBRARY | |
| 42 | .Lb libc | |
| 43 | .Sh SYNOPSIS | |
| 44 | .In unistd.h | |
| 45 | .Ft int | |
| 46 | .Fn getdtablesize void | |
| 47 | .Sh DESCRIPTION | |
| 48 | Each process has a fixed size descriptor table, | |
| 49 | which is guaranteed to have at least 20 slots. The entries in | |
| 50 | the descriptor table are numbered with small integers starting at 0. | |
| 51 | The call | |
| 52 | .Fn getdtablesize | |
| 53 | returns the size of this table. | |
| 39236c6e A |
54 | .Sh LEGACY |
| 55 | The | |
| 56 | .Xr getrlimit 2 | |
| 57 | function returns a value of type | |
| 58 | .Ft rlim_t . | |
| 59 | This interface, returning an | |
| 60 | .Ft int , | |
| 61 | may have problems representing appropriate values in the future. | |
| 62 | Applications should use the | |
| 63 | .Xr getrlimit 2 | |
| 64 | function instead. | |
| 6d2010ae A |
65 | .Sh SEE ALSO |
| 66 | .Xr close 2 , | |
| 67 | .Xr dup 2 , | |
| 39236c6e | 68 | .Xr getrlimit 2 , |
| 6d2010ae A |
69 | .Xr open 2 , |
| 70 | .Xr select 2 | |
| 71 | .Sh HISTORY | |
| 72 | The | |
| 73 | .Fn getdtablesize | |
| 74 | function call appeared in | |
| 75 | .Bx 4.2 . |